Weather seal for frame and movable panel assembly

Abstract

In a frame and movable panel assembly, such as a ventilating skylight, a weather seal comprises a panel cap on the panel, a projection on the frame and a water dam on the projection. The cap defines a covered recess into which the projection enters upon closure of the panel on the frame, to provide a primary air tight seal. The dam simultaneously contacts the cap to provide a secondary water tight seal which protects the primary seal.

What is claimed is: 
     
       1. An improved weatherstripping assembly for use with a perimeter frame and a panel pivotally mounted to said frame and adapted to open from and close against said frame, said panel having a perimeter edge, said assembly comprising: a first flange extending upwardly from said frame; a second flange extending downwardly from said panel and being spaced apart from the perimeter edge of said panel to define a recessed area adjacent said edge of said panel; a first weatherstripping member operatively associated with said recessed area and said first flange; said first flange being adapted to enter said recessed area with said first weatherstripping member providing substantially air-tight sealing engagement between said panel and said frame upon closure of said panel against said frame; a second weatherstripping member operatively associated with said first flange and said second flange, said second weatherstripping member providing upon closure of said panel against said frame a non-air-tight substantially watertight seal between said panel and said frame; said second weatherstripping being spaced outwardly on said frame with respect to said first weatherstripping member so as to define an air space between said first and second weatherstripping member and being constructed of such flexible material so as to permit the air pressure to equalize on both sides of said second weatherstripping member when said panel is closed against said frame and whereby said second weatherstripping member functions as a water screen to protect said first weatherstripping member from moisture. 
     
     
       2. The assembly of claim 1 further comprising a third weatherstripping member mounted on said frame inwardly with respect to said first weatherstripping member for substantially air-tight sealing engagement with said panel upon closure of said panel against said frame thereby preventing condensation and frost from forming on said panel. 
     
     
       3. The assembly of claim 1 wherein said first weatherstripping member includes a panel cap secured to said panel to provide a covered recess adjacent the edge of said panel, and said frame includes an upwardly extending projection adapted to enter said recess and matingly engage said first weatherstripping member upon closure of said panel against said frame. 
     
     
       4. The assembly of claim 2 wherein said first weatherstripping member includes resilient element is secured within said covered recess for substantially air-tight engagement with said projection of said frame. 
     
     
       5. The assembly of claim 2 wherein said second weatherstripping member includes a flexible leaf cantilevered from said projection of said frame for non-air-tight frictional engagement with said panel cap upon closure of said panel against said frame. 
     
     
       6. The assembly of claim 2 wherein said third weatherstripping member includes a compressible water resistant bulbous body for air-tight compressive sealing engagement with said panel upon closure of said panel against said frame. 
     
     
       7. The assembly of claim 2 wherein said frame and said panel have exterior cladding and said third weatherstripping member prevents moist interior air from contacting said cladding of said frame and panel thereby preventing condensation and frost from forming on said panel. 
     
     
       8. The assembly of claim 2 wherein said third weatherstripping member extends substantially around the perimeter of said frame. 
     
     
       9. The assembly of claim 1 wherein said first and second weatherstripping members extend substantially around the perimeter of said panel and said frame, respectively. 
     
     
       10. The assembly of claim 1 wherein said frame and said panel are a ventilating skylight device. 
     
     
       11. An improved weatherstripping assembly for use with a perimeter frame and a panel pivotally mounted to said frame and adapted to open from and close against said frame, said panel having a perimeter edge, said assembly comprising: a first flange extending upwardly from said frame;   a second flange extending downwardly from said panel and being spaced apart from the perimeter edge of said panel to define a recessed area adjacent said edge of said panel;   a first weatherstripping member mounted within said recessed area;   said first flange being adapted to enter said recessed area and matingly engage said first weatherstripping member so as to provide substantially air-tight sealing engagement between said panel and said frame upon closure of said panel against said frame;   a second weatherstripping member mounted on said first flange and extending downwardly and outwardly therefrom;   said second flange brushing downwardly across said second weatherstripping member into engagement therewith upon closure of said panel against said frame so as to provide non-air-tight substantially water-tight sealing engagement between said panel and said frame upon closure of said panel against said frame;   said second weatherstripping being spaced outwardly on said frame with respect to said first weatherstripping member so as to define an air space between said first and second weatherstripping member and being constructed of such flexible material so as to permit the air pressure to equalize on both sides of said second weatherstripping member when said panel is closed against said frame and whereby said second weatherstripping member functions as a water screen to protect said first weatherstripping member from moisture.